First record of Caiman (Crocodilya, Alligatoridae) from the Pleistocene of Rio Grande do Sul State, Brazil
Abstract
A first record of Alligatoridae reptiles is made to the coastal plain deposits from Rio Grande do Sul State, in southern Brazil. The fossil bone represents a part of a left premaxilla and is probably related to the lagoon sediments of the Barrier-Lagoon System III, considered to be formed at 120 ka and exposed at Hermenegildo Beach, Santa Vitória do Palmar city. In spite of its incomplete preservation, the comparison with modern specimens and other elements of the family from South America suggests its relation with the modern genus Caiman.
Key-words: Alligatoridae, Caiman, Pleistocene, Coastal Plain, Rio Grande do Sul, Brazil.Downloads
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